docs: def _delay_call(self):
          """
              Makes sure that web service calls are at least 0.2 seconds apart.
          """
          now = time.time()
  
          time_since_last = now - self.last_call_time
  
          if time_since_last < DELAY_TIME:
              time.sleep(DELAY_TIME - time_since_last)
  
          self.last_call_time = now